Multiple-bolt lock.



A. S. HILL.

MULTIPLE BOLT LOCK.

APPLIUATION FILED sEPT.2a,1913,

Patented Mar. 10, 1914.

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amr/ump ALEXANDER S. HILL, OF WASHINGTON, DISTRICT OF COLUMBIA.

MULTIPLE-BOLT LOCK.

Specification of Letters Patent.

Patented Mar. 10, 1914.

Application filed September 29, 1913. Serial No. 792,377.

To all whom 'it may concern Be it known that I, ALEXANDER S. Hina., a citizen of the United States, residing at Washington, in the District oit Columbia, have invented certain new and use't'ul Iniprovements in Multiple-Bolt Locks; and I do declare the following to be a liull, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in locks, and more especially to mechanism ttor retracting a plurality of bolts simultaneously.

The object of the invention is to provide simple and etlicient mechanism for simultaneously retracting a multiplicity oit bolts on the turning of a knob, and which are auto matically projected by a gravity controlled member.

With this and other objects in view, the invention consists oit certain novel features of construction, and the combination and arrangement of parts, as will be more 4fully described and claimed.-

Inthe accompanying drawings: Figure 1 represents a front elevation, partly in section, of a portion of a door equipped with this improved lock, and with the bolts shown in projected locking position. Fig. 2 is a similar view with the bolts retracted and the parts in the position which they assume when the door is unlocked. Fig. 3 is an edge View of a portion of a door equipped. with this lock. Fig. 4 is a transverse section taken on the line 11-4 of Fig. 1. Fig. ls a similar view, taken on the line 5-5 of Fig. 1.

n the embodiment illustrated, this improved lock is shown applied to a wooden door D in a recess or mortise therein, but it is to be understood that it may be applied to a metal or other door.

A sectional knob spindle S :is shown such as is employed in the structure illustrated in my application Serial No. 7 56,77 8, tiled March 28. 1913, said spindle being revolu bly mounted in a casing C on one side et the door, and a plate P on the other side.

A disk 1 is rigidly attached to the inner section of the knob spindle, and is adapted to be rotated on the turning ot' the knob K. This disk has a notch 2 in its periphery for a purpose to be described, and a Iinger 5? bromon bolt operating bar l hereinafter described.

Mounted in the edge ot the door are a plurality ot longitudinally spaced locking bolts 5 adapted to move in apertures (i therein at right angles thereto. As shown, these bolts are disposed in a housing 7 secured in a mortise in the edge oit the door, and this housing' is provided with a plurality oi chambers 8 in each of i'hich is ful crunied a bell crank bolt retracting lever 9, the tree end oit one arm 10 of which extends into an aperture in the rear end of an adja cent bolt 5, and the other end of its :tree arm 11 projects into an opening 12 in the operating bar l. These openings 12 are preferably circular in configuration with an outlet 13 at the edge of the bar to provide for the entrance thereinto of the arm 11 of the bell crank lever 9. The tree end of each arm 11 is provided with a knob or head 14- to facilitate its movement relatively to said openings 12.

The operating bar 4 is preferably composed oit metal to provide sufficient weight to cause it to drop by gravity when the holding mechanism therefor is released. This bar is mounted in a socket or recess 15 in which said housing 7 is disposed and adjacent to said housing, said recess 15 being longer than the bar 4l; to permit the longitudinal movement therein ol said bar. This har f1 also has an opening 16 extending through its inner edge to receive the finger 3 oi the disk 1. It also has an opening 17 extending transversely therethrough from edge to edge for the passage of a releasing bar or trip 1S, which also extends through an opening 19 in the housing, said openings registering with each other.

A T-shaped catch 2O has its stem pivoted at 21 in position to permit its head 23 to engage the notch 2 of the disk 1 when said disk is turned to raise the operating bar 4 sul'liciently to cause the bell crank levers 9 to retract the bolts 5 as is shown clearly in Fig'. 2. '.lhe trip or releasing bar 18 is loosely engaged with a pin 1S in the upper end ol. the head ol said catch 20 and extends through the apertures 17 and 1S) in the bar #t and housing 7 respectively. This trip 18 normally projects beyond the edge of the door when the bolts are retracted as shown in Fig. 2 and the projecting end thereof is beveled as at 19 and designed, on the closing jects from its periphery for actuating a com oi' the door, to contact with the keeper plate,

whereby said trip is forced inwardly, thereby raising the catch 20 out of engagement with the notch 2 in disk l, and permitting the bar il to drop by gravity, carrying with it the headed arms of the bell crank levers 9, which cause their other arms to move outwardly and project the bolts 5 into locking position as shown in Fig. l. The free outer end of this trip bar 18 is preferably bent at an angle as shown in F ig. 5 to adapt said bar to be lengthened by straightening said bent end more or less to compensate for shrinkage in the door or frame, should any occur.

When it is desired to retract the bolts 5 for unlocking the door, the knob K is turned in the direction necessary to cause the finger 3 of the disk l to move upwardly and carry with it the bar 4, thereby elevating the headed ends of the bell crank lever arms 11, and thus moving the arms 10 inwardly, whereby the bolts 5 are retracted and disengaged from the sockets in the keeper plate on the door j amb. Vhen the disk has been turned suiiiciently to retract the bolts 5, the notch thereof will be positioned below the head of the catch 20, which will drop by gravity into engagement therewith, and thus lock the disk against turning and hold the bar 4 elevated, and the bolts 5 retracted.

If desired, a locking device for preventing the turning of the outer door knob may be provided, and is shown in the form of a Ward or bit 22 similar to that shown in my application above referred to, but as it forms no part of this invention, it need not be described in detail.

I claim as my invention 1. In a lock ofthe class described, the combination of a locking bolt, an upright operating bar connected therewith and having an opening, a disk having a finger loosely engaged with said opening, means for turning said disk to move said bar, a pivoted catch, said disk having a notch for engagement by said catch when the bar is raised, and a trip bar pivoted to said catch and projecting beyond the edge of the door when the bolt is retracted, its projecting end being beveled, for the purpose set forth.

2. In a lock of the class described, the combination of a plurality of spaced locking bolts, a common operating bar, means for connecting said bolts and bar, a bar retracting disk having a finger extending from the periphery thereof and loosely engaged with said bar, means for turning said disk to move said bar, a pivoted catch, means on said disk for engagement by said catch when the bolts are in retracted position, and means connected with said catch andV projecting beyond the door to which the lock is applied when said bolts are in retracted position.

3. In a lock of the class described, the

combination of a plurality of spaced locking bolts, longitudinal, movable operating bar for actuating said bolts simultaneously, bell crank levers connected with said bolts and bar, means connected with said bar for moving it in one direction to retract the bolts, a catch positioned to automatically lock said bar moving means to hold the .bolts in retracted position, and means connected with said catch and adapted to project beyond the edge of the door to which the lock is applied, when the bolts are in retracted position.

1i. In a lock of the class described, the combination of a. housing having a plurality of longitudinally spaced transversely sliding bolts mounted therein, bell crank levers fulcrumed in said housing and having one arm engaged with said bolts, an operating bar arranged at the rear of said housing and having means for engagement with the other arm of said bell crank levers, means for moving said bar in one direction for retracting the bolts, automatic means for engaging said bar moving` means for locking the bar to hold the bolts in retracted position, and means for releasing said automatic means.

5. In a lock of `the class descri-bed, the combination of a housing having a plurality of longitudinally spaced, transversely sliding bolts, bell cranks fulcrumed in said housing' and having one arm thereof loosely engaged with said bolts, an operating bar mounted to move longitudinally adjacent said housing and provided with a plurality of longitudinally spaced apertures, the other arms of said bell crank levers having heads adapted to enter said apertures, registering openings in said bar and housing extending transversely therethrough, a disk revolubly mounted adjacent said bar and having a peripheral finger, means on said bar for engagement by said linger, a catch pivoted adjacent said disk, means on said disk positioned for engagement by said catch when the bar is moved to retract the bolts, and a catch releasing trip extending through the registering apertures in said bal` and housing.

6. In a lock of the class described, the combination of a housing having a plurality of horizontally sliding bolts, bell crank levers fulcrumed in said housing and having one arm loosely engaged with said bolts, an operating bar mounted to move vertically behind said housing and providedy with a plurality of apertures engaging the other arms of said levers, the bar and, the

housing having registering horizontal open- 'r ings, a disk revolubly mounted adjacent said bar and having a peripheral notch, connections between the disk and bar, a T- shaped catch whose stem is pivoted adjacent said disk and whose head. engages said notch when the bar is raised, and a trip bar connected with said head and projecting through said registering openings, for the purpose set forth.

7. In a lock of the class described, the combination of ay housing having a plurality of horizontally sliding lbolts, an upright operating bar connected With said bolts, whereby the latter are projected by the descent o'f the bar, a rotary disk having a notch in its periphery, connections between said disk and bar for raising the latter by the turning of the former, a T-shaped catch whose stem is pivoted adjacent said disk and whose head at its lower end engages said 15 notch when the bar is raised, a pin rising from the upper end of said head, and a trip bar loosely connected with said pin and projected through said housing and beyond the edge of the door, its outer end being 20 beveled, for the purpose set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ALEXANDER S. HILL. lVitnesses I-Innnn'r K. MACGEARY, J. A. GRIESBAUER.

Copies o! this patent may be obtained for ave cents each, by addressing the Commissioner of Patents, Washington, D. C." 

